On Wednesday, August 29, 2018 at 6:15:50 PM UTC-5, Brent wrote:
>
>
>
> On 8/29/2018 4:04 PM, Philip Thrift wrote:
>
>
>
> On Wednesday, August 29, 2018 at 4:55:12 PM UTC-5, Brent wrote: 
>>
>> Do you have some evidence for doubting CT?  It seems that it's 
>> essentially a definition of digital computation.  So you could offer 
>> some other definition, but it would need to be realisable. 
>>
>> Brent 
>>
>> On 8/29/2018 12:12 PM, Philip Thrift wrote: 
>> > also thought by some in what I call the UCNC gang 
>>
>> Also thought WHAT? 
>>
>  
>
>
>
> In terms of theory, Joel David  Hamkins  @*JDHamkins* 
> <https://twitter.com/JDHamkins>   (the set-theorist now at Oxford) 
> considers infinite-time TMs to be a part of "computation":
>
>
>                 http://jdh.hamkins.org/ittms/
>
> If computation is the fundamental "substrate" of nature, and  ITTMs are 
> "natural" extensions of TMs, there is no reason to exclude ITTMs.
>
> But what does the presence of ITTMs  mean for the CT thesis? Whether ITTMs 
> are "realizable" remains to be seen.
>
>
> In terms of practice, UCNC people think that computers made with 
> non-standard materials, e.g. "live" bioware produced by synthetic biology, 
> could have novel computational (behavioural) abilities not equivalently 
> replicable in a simulation.
>
>
> And John Searle thinks only wetware can be conscious.  The question is, do 
> they have evidence for this?  After all a simulation can go all the way 
> down to subatomic level.  There's nothing in principle requiring it to stop 
> at the neuron level, although that's where most AI researchers assume the 
> information processing happens.
>
> Brent
>
 

Then in a practical sense it is a race to see who can make the first 
conscious "robot": a synthetic-bio wetware team, and the alternative teams. 
And even then we may not be sure.

- pt

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